Hi All, @stevebaer , I am unwelding specific mesh edges with Python in a GH component to achieve creased SubD edges. SubD conversion is done with GH’s Subd from Mesh component. The mesh has Ngons with 5 and 6 vertices. UnweldEdge() destroys the Ngons. I am trying to store the Ngons and add them agai…

[image] silvano: Any other way to crease edges programmatically? Creasing edges is done by setting EdgeTag information. See https://developer.rhino3d.com/api/RhinoCommon/html/P_Rhino_Geometry_SubDEdge_Tag.htm There is also a SetEdgeTags function on the SubDEdgeList that is available in Rhin…

Hi @stevebaer , @DavidRutten Thanks for adding SetEdgeTags to rhcommon. The C# component below uses it. Creasing decisions are based on points at the control polygon edges middle point (point at middle → edge is creased). 1075_210602_RFD-SubdEdgeTagWSearch_SO.gh (11.5 KB) Some issues persist that…

[image] silvano: Also, SetEdgeTags is undocumented ? This function was added to Rhino 7.7 which is still not the official release until next week. Once we release 7.7, we will update the RhinoCommon API docs.

[image] stevebaer: This function was added to Rhino 7.7 which is still not the official release until next week. Once we release 7.7, we will update the RhinoCommon API docs. I forgot I am using the RC updates. Thanks for the reminder. Just changed my post above to sum up everything regardin…

Silvano, that’s a nice way with your script! @stevebaer this would be a useful command …

@stevebaer Is there an equivalent method to SetEdgeTags() for SubD.Vertices in rhinocommon? I have to crease some vertices, but not all of them, around an open edge loop. Please see the following sketch. Vertices to be creased are encircled in red. [image] The following results in an invalid Su…

@stevebaer I was able to solve the invalid SubD with the below. Is this as it is supposed to be done? S is a SubD object. // Crease vertices SubDVertex sv = S.Vertices.First; while (sv != null) { sv.Tag = SubDVertexTag.Corner; sv = sv.Next; } // Fixes invalid output caused by sv.Tag = SubD…

thanks for your code @lasathrs , please is there a way to analyse the closest subD vertex or add tolerance but within the code? sometimes it doesn’t detect some PC points? thank you!

hi @lasathrs @silvano in this example the First SubD make Inset but the Corner Point in your Script doesn’t work to result SubD [cornerPoint] is there solution for it? Crease Corner.gh (22.7 KB)

SubD Edge & Vertex Tags (Creasing Programmatically)

Grasshopper Developer

lasathrs (Lasath ) August 25, 2021, 9:58am 10

Amazing! I have been looking for this solution for a while! I added having specific points as corners.
CreaseVertex.gh (19.4 KB)

(SubD From Mesh) And Mesh From SubD

Help Rhino Grasshopper Kangaroo Tent

Topic		Replies	Views
Is it possible to choose which mesh edges to crease for a SubD object? Grasshopper windows	23	3402	May 13, 2024
RH7 GH SubD How to edit multiple edge tags/creases Grasshopper mac , subd , rhino7	2	630	July 19, 2022
SubD Edge Tag Misinterpretation Grasshopper windows , subd	3	873	November 15, 2021
Create subD from Mesh and Vertices Tags and Edges Tags? Grasshopper windows , subd	0	70	January 5, 2025
Rhinocommon removecrease Rhino Developer windows	2	290	April 19, 2023

SubD Edge & Vertex Tags (Creasing Programmatically)

Related topics